Terminal and electrical connector

ABSTRACT

A terminal and an electrical connector are shown and the terminal has a tail, an elastic arm, a contact and a front guiding member. The elastic arm is connected to the tail. The contact is positioned at a distal end of the elastic arm. The contact has a front guiding surface extending forwards and downwards. The front guiding member extends forwards from the elastic arm. The front guiding member has a front guiding portion that extends forwards and downwards. An extending direction of the elastic arm and an extending direction of the front guiding member intersected at an angle. The front guiding portion is positioned in front of the front guiding surface of the contact.

RELATED APPLICATIONS

This application claims priority to Chinese Application No.201410364926.9, filed Jul. 29, 2014 and to Chinese Application No.201410364695.1, filed Jul. 29, 2014, both of which are incorporatedherein by reference in their entirety.

TECHNICAL FIELD

The present disclosure relates to a terminal and an electricalconnector.

BACKGROUND ART

An electrical connector typically has a plurality of terminals.Generally, a terminal obliquely extends into an insertion space. When aninsertion device is inserted into the insertion space along theinsertion direction, the insertion device will exert a horizontalcomponent force and a vertical component force on the terminal. Thevertical component force will make the terminal move toward the outsideof the insertion space, so that the insertion device may be insertedinto the insertion space. Under some situations, the horizontalcomponent force may make the terminal deformed, so a contact of theterminal for electrically connecting the insertion device may be offsetfrom a normal position of the contact.

To avoid the above situations, United States patent U.S. Pat. No.6,843,688 discloses a design of a terminal. The terminal comprises aninsulative body, a contact and extension portions. The terminal isprovided to the insulative body, the extension portions extend from bothsides of the contact toward the insulative body in form of an arcsurface or an oblique surface. The contact typically forms a highestposition of the terminal, therefore the extension portion extending fromthe highest position extends steeply and downwards, especially when theposition of the contact is higher. When the insertion device isinserted, the insertion device easily exerts a larger horizontalcomponent force on the extension portion which extends steeply, theterminal is easily subjected to a larger impact force and a lateralshearing force and in turn the terminal is easily deformed.

SUMMARY OF THE INVENTION

A terminal is disclosed and includes a tail, an elastic arm, a contactand a front guiding member. The elastic arm is connected to the tail.The contact is positioned at a distal end of the elastic arm. Thecontact comprises a front guiding surface that extends forwards anddownwards. The front guiding member extends forwards from the elasticarm. An extending direction of the elastic arm and an extendingdirection of the front guiding member are intersected as an angle. Thefront guiding portion is positioned in front of the front guidingsurface of the contact. A highest position of the front guiding memberis lower than a highest position of the contact. A lowest position ofthe front guiding surface of the contact is lower than the highestposition of the front guiding member.

In an embodiment, the terminal further comprises a rear guiding memberextending rearwards from the elastic arm, the rear guiding membercomprises a rear guiding portion extending rearwards and downwards, thecontact comprises a rear guiding surface extending rearwards anddownwards, the rear guiding portion is positioned behind the rearguiding surface, a highest position of the rear guiding member is lowerthan the highest position of the contact, a lowest position of the rearguiding surface is lower than the highest position of the rear guidingmember.

In an embodiment, the rear guiding member comprises: a connectingportion extending rearwards from the elastic arm; and a protrudingportion protruding upwards and is connected to the rear guiding portion.In an embodiment, the contact is an arch top cover, a front surface ofthe arch top cover forms the front guiding surface, and a rear surfaceof the arch top cover forms the rear guiding surface.

In an embodiment, the extending direction of the elastic arm and anextending direction of the rear guiding member are intersected as anangle of 90°. In another embodiment, the extending direction of theelastic arm and the extending direction of the front guiding member areintersected as the angle of 90°.

In an embodiment, the front guiding member comprises: a connectingportion extending forwards from the elastic arm; and a protrudingportion protruding upwards and connected to the front guiding portion.

An electrical connector includes an insulative housing with an uppersurface; and a plurality of terminals fixed to the insulative housing.The plurality of terminals each includes a tail; an elastic armconnected to the tail; a contact positioned at a distal end of theelastic arm and protruding relative to the upper surface of theinsulative housing, the contact comprising a front guiding surfaceextending forwards and downwards; and a front guiding member extendingforwards from the elastic arm. The front guiding member comprises afront guiding portion extending forwards and downwards, the frontguiding portion protrudes relative to the upper surface of theinsulative housing, an extending direction of the elastic arm and anextending direction of the front guiding member are intersected as anangle, the front guiding portion is positioned in front of the frontguiding surface of the contact, a highest position of the front guidingmember is lower than a highest position of the contact, a lowestposition of the front guiding surface of the contact is lower than thehighest position of the front guiding member, a lowest position of thefront guiding member is lower than the upper surface of the insulativehousing.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view of an embodiment of the present disclosureillustrating an electrical connector, a tray, an electronic card and acircuit board.

FIG. 2 is a schematic view of an embodiment of the present disclosureillustrating the electrical connector and the tray.

FIG. 3 is a schematic view of an embodiment of the present disclosureillustrating terminals, a frame and the like.

FIG. 4 is a schematic view of an embodiment of the present disclosureillustrating an insulative housing.

FIG. 5 is a schematic view of an embodiment of the present disclosureillustrating the terminal.

FIG. 6 is another schematic view of the embodiment of the presentdisclosure illustrating the terminal.

FIG. 7 is still another schematic view of the embodiment of the presentdisclosure illustrating the terminal.

FIG. 8 is a schematic view of the embodiment of the present disclosureillustrating the terminals and the insulative housing.

FIG. 9 is a schematic view of an embodiment of the present disclosureillustrating a terminal module, the tray and a detecting terminalinserted in the terminal module.

FIG. 10 is a schematic view of the embodiment of the present disclosureillustrating an metal upper cover and the detecting terminal.

FIG. 11 is a schematic view of an embodiment of the present disclosureillustrating how the detecting status of the detecting terminal ischanged by the tray.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

As can be appreciated, a number of embodiments of disclosed. Potentialbenefits of the present disclosure include that the front guiding membermay be contacted and pressed downwards first to make the contact of theterminal move downwards by a certain distance when the electronic cardis inserted, then the electronic card contacts and downwards presses thecontact; that is the contact of the terminal may be pressed downwards intwo stages, which may significantly decrease the impact force and thelateral shearing force exerted on the terminal, and help maintain thenormal function of the terminal.

Referring to FIG. 1, an electrical connector 1 may be provided on acircuit board 4. The electrical connector 1 may be used for insertion ofa tray 2 carrying an electronic card 3 or insertion of an electroniccard 3. The electrical connector 1 defines an insertion space 11. Thetray 2 carrying an electronic card 3 or the electronic card 3 may beinserted into the insertion space 11, thereby making the electronic card3 electrically connected to the circuit board 4 via the electricalconnector 1. The electrical connector 1 has an opening 400, the opening400 is positioned at a front end of the insertion space 11. The tray 2carrying an electronic card 3 or the electronic card 3 may be insertedinto the insertion space 11 along a card insertion direction 100 whichis from the front to the rear via the opening 400.

Referring to FIGS. 1-4, the electrical connector 1 comprises a terminalmodule 5. The terminal module 5 comprises an insulative housing 51 and aplurality of terminals 52. The plurality of terminals 52 are fixed tothe insulative housing 51. In some embodiments, the plurality ofterminals 52 are embedded in the insulative housing 51; but the presentdisclosure is not limited to this.

Referring to FIGS. 1, 3 and 5-7, the terminal 52 comprises a tail 521,an elastic arm 522, a contact 523 and a front guiding member 524. Theelastic arm 522 may make the contact 523 displace elastically. Thecontact 523 may contact a connecting pad on the electronic card 3. Thefront guiding member 524 may first contact the electronic card 3 beforethe inserted electronic card 3 contacts the elastic arm 522 or thecontact 523, and in turn bring the elastic arm 522 and the contact 523to lower in height, thereby decreasing impact force and lateral shearingforce on the elastic arm 522 and the contact 523 from the insertedelectronic card 3.

The tail 521 of the terminal 52 may be soldered on the circuit board 4.The tail 521 of the terminal 52 may be connected to an end of theelastic arm 522. In some embodiments, the terminal 52 comprises anextension portion 525, the tail 521 is connected to the extensionportion 525. The tail 521 may make the tail 521 extend to apredetermined position via the extension portion 525. In someembodiments, the terminal 52 comprises a base portion 526. The tail 521may be connected to the base portion 526, and the elastic arm 522 mayextend from the base portion 526. In some embodiments, the terminal 52comprises an extension portion 525 and a base portion 526. The extensionportion 525 connects the tail 521 and the base portion 526, and theelastic arm 522 may extend from the base portion 526. In someembodiments, at least a part of the extension portion 525 may beembedded in the insulative housing 51. In some embodiments, at least apart of the base portion 526 may be embedded in the insulative housing51.

Referring to FIG. 4 and FIG. 8, the insulative housing 51 may have aplurality of terminal grooves 512. The plurality of terminals 52 arecorrespondingly provided to the plurality of terminal grooves 512. Thecontact 523 may be positioned at a distal end of the elastic arm 522.The elastic arm 522 may make at least a part of the contact 523 protruderelative to an upper surface 511 of the insulative housing 51. In someembodiments, the elastic arm 522 extends in the corresponding terminalgroove 512. In some embodiments, a part of the elastic arm 522 mayextend out of the terminal groove 512. In some embodiments, the elasticarm 522 first extends obliquely and downwards from an end close to aside wall of the terminal groove 512 and then extends obliquely andupwards, so that the elastic arm 522 has a downward recessed segment5221, consequently a height of the contact 523 is not increased ordecreased in a case that a length of the elastic arm 522 is maintainedas a constant predetermined value, or the length of the elastic arm 522is increased under a predetermined horizontal distance.

Referring to FIG. 5 and FIG. 8, in some embodiments, the contact 523 maybe an arch top cover. In some embodiments, the contact 523 may be a domeshape. In some embodiments, the contact 523 may be an arc piece.

Referring to FIGS. 2, 5 and 8, in some embodiments, the contact 523comprises a front guiding surface 5231. When the electronic card 3 isinserted, the electronic card 3 contacts the front guiding surface 5231and moves along the front guiding surface 5231, so as to push thecontact 523 to move downwards toward the terminal groove 512. The frontguiding surface 5231 may extend forwards and downwards. In someembodiments, when the contact 523 is a shape of the arch top cover orthe dome shape, an outer surface of the contact 523 is composed of afront side surface and a rear side surface, the front guiding surface5231 is a part of or the whole of the front side surface. In someembodiments, the front guiding surface 5231 along the left-rightdirection 200 is slightly larger than a range that the electronic card 3contacts the front guiding surface 5231 when the electronic card 3 isinserted. In some embodiments, the front guiding surface 5231 extendsdownwards to a bottom edge 5230 of the contact 523.

Referring to FIG. 3, FIG. 5 and FIG. 8, in some embodiments, the frontguiding member 524 extends forwards from the elastic arm 522. Anextending direction of the elastic arm 522 and an extending direction ofthe front guiding member 524 may be intersected as an angle θ1. In someembodiments, the angle θ1 may be 90°; but the present disclosure is notlimited to this.

Referring to FIG. 5 and FIG. 8, the front guiding member 524 maycomprise a front guiding portion 5241. The front guiding portion 5241may extend forwards and downwards. The front guiding portion 5241 ispositioned in front of the front guiding surface 5231 of the contact523, therefore the front guiding portion 5241 may early contact theinserted electronic card 3. In some embodiments, at least a part of thefront guiding portion 5241 may protrude relative to the upper surface511 of the insulative housing 51.

Referring to FIG. 7, in some embodiments, the contact 523 has a highestposition 5232, the front guiding member 524 has a highest position 5242,the highest position 5242 of the front guiding member 524 is lower thanthe highest position 5232 of the contact 523. In some embodiments, alowest position 5233 of the front guiding surface 5231 of the contact523 is lower than the highest position 5242 of the front guiding member524, which can avoid the electronic card 3 contacting the bottom edge5230 of the contact 523 when the electronic card 3 is inserted and inturn avoid the terminal 52 being deformed. In some embodiments, thelowest position 5233 of the front guiding surface 5231 is a lowestposition on a lower edge of the front guiding surface 5231, a highestposition on the lower edge of the front guiding surface 5231 or anyposition between the lowest position on the lower edge of the frontguiding surface 5231 and the highest position on the lower edge of thefront guiding surface 5231.

Referring to FIG. 8, in some embodiments, the front guiding member 524has a lowest position 5243. When the terminal 52 is not actuated, thelowest position 5243 may be lower than the upper surface 511 of theinsulative housing 51. In some embodiments, the front guiding member 524has a distal end edge, and the lowest position 5243 is any position onthe distal end edge. In some embodiments, the any position may be alowest position, a highest position, or any position between the lowestposition and the highest position on the distal end edge.

Referring to FIG. 5, in some embodiments, the elastic arm 522 comprisesa horizontal extending segment 5222, and the front guiding member 524extends from the horizontal extending segment 5222.

In some embodiments, the front guiding member 524 comprises a connectingportion 5244 and a protruding portion 5245. The connecting portion 5244extends forwards from the elastic arm 522. The connecting portion 5244may be connected to the protruding portion 5245. The protruding portion5245 protrudes upwards. The protruding portion 5245 may be connected tothe front guiding portion 5241.

Referring to FIG. 5 to FIG. 7, the terminal 52 comprises a rear guidingmember 527. The rear guiding member 527 may prevent the empty tray 2from hooking the terminal 52 when the empty tray 2, which does not carrythe electronic card, is removed from the electrical connector 1. Therear guiding member 527 may comprise a rear guiding portion 5271, therear guiding portion 5271 may extend rearwards and downwards.Furthermore, the contact 523 has a rear guiding surface 5234. The rearguiding surface 5234 may extend rearwards and downwards. The rearguiding portion 5271 is positioned behind the rear guiding surface 5234.The rear guiding member 527 has a highest position 5272, the highestposition 5272 of the rear guiding member 527 is lower than the highestposition 5232 of the contact 523. The rear guiding surface 5234 may havea lowest position 5235, the lowest position 5235 of the rear guidingsurface 5234 is lower than the highest position 5272 of the rear guidingmember 527. In some embodiments, the lowest position 5235 of the rearguiding surface 5234 may be a lowest position on a lower edge of therear guiding surface 5234, a highest position on the lower edge of therear guiding surface 5234, or any position between the lowest positionon the lower edge of the rear guiding surface 5234 and the highestposition on the lower edge of the rear guiding surface 5234.

Referring to FIG. 8, in some embodiments, the rear guiding member 527has a lowest position 5275. When the terminal 52 is not actuated, thelowest position 5275 may be lower than the upper surface 511 of theinsulative housing 51. In some embodiments, the rear guiding member 527has a distal end edge, the lowest position 5275 is any position on thedistal end edge. In some embodiments, the any position may be a lowestposition, a highest position, or any position between the lowestposition and the highest position on the distal end edge.

In some embodiments, the contact 523 is an arch top cover or a domeshape, an outer surface of the contact 523 is composed of a front sidesurface and a rear side surface, and the rear guiding surface 5234 is apart of or the whole of the rear side surface. In some embodiments, therear guiding surface 5234 extends downwards to the bottom edge 5230 ofthe contact 523.

Referring to FIG. 5, in some embodiments, the rear guiding member 527extends rearwards from the elastic arm 522. The extending direction ofthe elastic arm 522 and an extending direction of the rear guidingmember 527 may be intersected as an angle θ2. In some embodiments, theangle θ2 may be 90° but other angles are contemplated.

In some embodiments, the front guiding member 524 and the rear guidingmember 527 may be same while in other embodiments they can be different.

In some embodiments, the front guiding member 524 and the rear guidingmember 527 may be aligned with each other along a direction formed bytwo sides of the elastic arm 522 of the terminal 52 but such alignmentis not required. In some embodiments, the front guiding member 524 andthe rear guiding member 527 may be aligned with each other along thecard insertion direction 100 but alignment is not required.

Referring to FIG. 5, in some embodiments, the elastic arm 522 comprisesa horizontal extending segment 5222, the rear guiding member 527 extendsfrom the horizontal extending segment 5222.

Referring to FIG. 7, in some embodiments, the rear guiding member 527comprises a connecting portion 5273 and a protruding portion 5274. Theconnecting portion 5273 extends rearwards from the elastic arm 522. Theconnecting portion 5273 is connected to the protruding portion 5274. Theprotruding portion 5274 is connected to the rear guiding portion 5271.

Referring to FIG. 3 and FIG. 4, the terminal module 5 comprises twometal frames 53 and two latch blocks 54. The each metal frame 53comprises an elastic beam 531, the two elastic beams 531 are positionedat two opposite sides of the terminal module 5, and the each latch block54 are provided on the corresponding elastic beam 531. In someembodiments, the each latch block 54 is provided on the correspondingelastic beam 531 by overmolding. Referring to FIG. 1 and FIG. 9, thetray 2 comprises a front frame bar 20 and a frame portion 21. The frameportion 21 is connected to the front frame bar 20. The frame portion 21defines a space for receiving the electronic card 3. The frame portion21 may have two latch recesses 211. After the tray 2 is inserted in theelectrical connector 1, the two latch blocks 54 respectively latch on tothe latch recesses 211 so as to hold the tray 2.

Referring to FIG. 1, the tray 2 can be formed of a metal or non-metalmaterial. In some embodiments, the tray 2 may be metal and may includean insulative material layer 22, the insulative material layer 22 isformed on an inner edge portion of the tray 2 which supports andcontacts the electronic card 3, the insulative material layer 22 mayelectrically isolate the tray 2 and the electronic card 3 to prevent ashort circuit between the tray 2 and the electronic card 3.

Referring to FIG. 1, FIG. 2 and FIG. 10, in some embodiments, theelectrical connector 1 comprises a detecting switch 12. The detectingswitch 12 is used to detect whether the tray 2 is inserted. Thedetecting switch 12 comprises a detecting terminal 121 and a conductivemember which cooperates with the detecting terminal 121. The detectingterminal 121 comprises a tail 1211, an elastic arm 1212 and aninsulative pushed block 1213. The tail 1211 may be soldered on thecircuit board 4, or the tail 1211 may be connected to a conductive pathon the circuit board 4 with other configuration. The elastic arm 1212comprises a contact 12121. The insulative pushed block 1213 is providedto a distal end of the elastic arm 1212. When the insulative pushedblock 1213 is pushed, the contact 12121 maybe out of contact with theconductive member or contact the conductive member, thereby making thedetective status of the detecting switch 12 changed. In someembodiments, the elastic arm 1212 may be elastically displaced along anup-down direction 300 (e.g., upwards or downwards) or in a thicknessdirection of the electrical connector 1; but the present disclosure isnot limited to this. In some embodiments, the insulative pushed block1213 is pushed upwards or downwards so as to make the contact 12121 outof contact with the conductive member. In some embodiments, theinsulative pushed block 1213 is pushed upwards or downwards so as tomake the contact 12121 contact the conductive member. In someembodiments, the detecting terminal 121 is elastically displaced alongthe left-right direction to contact the conductive member or be out ofcontact with the conductive member.

In some embodiments, the detecting switch 12 is a normally open switch.In other embodiments, the detecting switch 12 is a normally closeswitch.

Referring to FIG. 10 and FIG. 11, in some embodiments, the electricalconnector 1 comprises a metal upper cover 13, a bottom region 131 of themetal upper cover 13 acts as the conductive member and is a part of themetal upper cover 13. In some embodiments, the conductive member is amember separated from the metal upper cover 13. In some embodiments, theconductive member is provided on the terminal module 5.

In some embodiments, the detecting terminal 121 comprises an insulativefixed block 1214, the detecting terminal 121 is fixed at any properposition of the electrical connector 1 via the insulative fixed block1214. In some embodiments, the detecting terminal 121 comprises a fixedportion 1215. The insulative fixed block 1214 is provided on the fixedportion 1215. In some embodiments, at least a part of the fixed portion1215 is embedded in the insulative fixed block 1214, but the presentdisclosure is not limited to this. The insulative fixed block 1214 hasan insertion hole 1216, and the electrical connector 1 comprises aninserting piece 132. The inserting piece 132 is inserted in theinsertion hole 1216 so as to make the detecting terminal 121 fixed. Insome embodiments, the metal upper cover 13 comprises an inserting piece132, but the present disclosure is not limited to this. Referring toFIG. 11, in some embodiments, the inserting piece 132 comprises at leastan interference block 1321. The interference block 1321 and theinsertion hole 1216 of the insulative fixed block 1214 are engaged as aninterference fit. When the inserting piece 132 is inserted in theinsertion hole 1216 of the insulative fixed block 1214, the interferenceblock 1321 may be anchored in the insertion hole 1216 of the insulativefixed block 1214 so as to make the detecting terminal 121 fixed.Referring to FIG. 10, in some embodiments, the fixed portion 1215 of thedetecting terminal 121 has an aperture 12151. The aperture 12151corresponds to the insertion hole 1216 of the insulative fixed block1214. The aperture 12151 may allow the inserting piece 132 to passthrough. In some embodiments, the fixed portion 1215 of the detectingterminal 121 may not have an aperture, but extend in manner of keepingaway from the inserting piece 132.

Referring to FIGS. 1, 2 and 11, the tray 2 comprises a pushing block 23.When the tray 2 is inserted into the electrical connector 1, the pushingblock 23 pushes the insulative pushed block 1213 of the detectingterminal 121 to make the contact 12121 of the detecting terminal 121 beout of contact with the conductive member or contact the conductivemember. In some embodiments, the detecting terminal 121 is positionedoutside the insertion space 11 and extends forwards, but does not extendinto the insertion space 11. The front frame bar 20 of the tray 2comprises a side extending portion 201, the side extending portion 201extends in front of the detecting terminal 121, and the pushing block 23is provided on the side extending portion 201.

Referring to FIGS. 3, 10 and 11, the metal frame 53 comprises a latchhook 532, the metal upper cover 13 is correspondingly provided with alatch hole 133, the latch hook 532 and the latch hole 133 are engaged asa clearance fit. That the latch hook 532 latches on to the latch hole133 may make the metal upper cover 13 fixed on the terminal module 5,which provides movable margin for each of the metal upper cover 13 andthe terminal module 5 to increase the coplanarity of the surfacesoldering before the metal upper cover 13 and the terminal module 5 aresoldered on the circuit board 4.

In at least one embodiment, the terminal of the electrical connectorcomprises a front guiding member. The front guiding member may becontacted and pressed downwards first to make the contact of theterminal together move downwards by a certain distance when theelectronic card is inserted, then the electronic card contacts anddownwards presses the contact; that is the contact of the terminal maybe pressed downwards in two stages, which may significantly decrease theimpact force and the lateral shearing force exerted on the terminal, anddefinitely maintain the normal function of the terminal. In someembodiments, the terminal may comprise a rear guiding member. The rearguiding member may make the contact pressed downwards in two stages soas to prevent the tray hooking the terminal when an empty tray isremoved.

Technical contents and technical features of the present disclosure aredisclosed as above, but person skilled in the art still may make varioussubstitutions and modifications without departing from the spirit of thepresent disclosure based on the teaching and disclosure of the presentdisclosure. Therefore, the protection scope of the present disclosureshould not be limited to the contents disclosed by the embodiments, butshould include various substitutions and modifications without departingthe present disclosure, and is covered by the appended Claims of thepresent disclosure.

What is claimed is:
 1. A terminal, comprising: a tail; an elastic armconnected to the tail; a contact positioned at a distal end of theelastic arm, the contact comprising a front guiding surface extendingforwards and downwards; and a front guiding member extending forwardsfrom the elastic arm, the front guiding member having a front guidingportion extending forwards and downwards, wherein the elastic armextends in a first direction and the front guiding member extends in asecond direction, the first and second directions being at an angle toeach other, the front guiding portion being positioned in front of thefront guiding surface of the contact, wherein a highest position of thefront guiding member is lower than a highest position of the contact anda lowest position of the front guiding surface of the contact is lowerthan the highest position of the front guiding member.
 2. The terminalaccording to claim 1, wherein the terminal further comprises a rearguiding member extending rearwards from the elastic arm, the rearguiding member comprises a rear guiding portion extending rearwards anddownwards, the contact comprises a rear guiding surface extendingrearwards and downwards, the rear guiding portion being positionedbehind the rear guiding surface, a highest position of the rear guidingmember being lower than the highest position of the contact and a lowestposition of the rear guiding surface being lower than the highestposition of the rear guiding member.
 3. The terminal according to claim2, wherein the rear guiding member includes a connecting portionextending rearwards from the elastic arm and further includes aprotruding portion protruding upwards and connected to the rear guidingportion.
 4. The terminal according to claim 2, wherein the contact is anarch top cover, a front surface of the arch top cover forms the frontguiding surface, and a rear surface of the arch top cover forms the rearguiding surface.
 5. The terminal according to claim 2, wherein theextending direction of the elastic arm and an extending direction of therear guiding member are intersected as an angle of 90°.
 6. The terminalaccording to claim 1, wherein the extending direction of the elastic armand the extending direction of the front guiding member are intersectedas the angle of 90°.
 7. The terminal according to claim 1, wherein thefront guiding member comprises a connecting portion extending forwardsfrom the elastic arm and a protruding portion protruding upwards and isconnected to the front guiding portion.
 8. An electrical connector,comprising: an insulative housing comprising an upper surface; aplurality of terminals fixed to the insulative housing, each of theplurality of terminals including a tail, an elastic arm connected to thetail, a front guiding surface extending forwards and downwards and acontact positioned at a distal end of the elastic arm, the contactprotruding relative to the upper surface of the insulative housing andincluding; and a front guiding member, extending forwards from theelastic arm, the front guiding member comprising a front guiding portionextending forwards and downwards, the front guiding portion protrudingrelative to the upper surface of the insulative housing, wherein theelastic arm extends in a first direction and the front guiding memberextends in a second direction that intersects the first direction at anangle, the front guiding portion being positioned in front of the frontguiding surface of the contact, a highest position of the front guidingmember being lower than a highest position of the contact, a lowestposition of the front guiding surface of the contact being lower thanthe highest position of the front guiding member, a lowest position ofthe front guiding member being lower than the upper surface of theinsulative housing.
 9. The electrical connector according to claim 8,wherein each of the plurality of terminals comprises a rear guidingmember extending rearwards from the elastic arm in a third direction,the rear guiding member of the each terminal including a rear guidingportion that extends rearwards and downwards, wherein the contact ofeach of the plurality of terminals includes a rear guiding surface thatextends rearwards and downwards, and the rear guiding portion ispositioned behind the rear guiding surface in the each terminal, whereina highest position of the rear guiding member is lower than the highestposition of the contact in the each terminal and a lowest position ofthe rear guiding surface is lower than the highest position of the rearguiding member in the each terminal.
 10. The electrical connectoraccording to claim 9, wherein the rear guiding member of each of theplurality of terminals includes a connecting portion that extendsrearwards from the elastic arm and a protruding portion that protrudesupwards and is connected to the rear guiding portion.
 11. The electricalconnector according to claim 9, wherein the contact of each of theplurality of terminals is an arch top cover and a front surface of thearch top cover forms the front guiding surface, and a rear surface ofthe arch top cover forms the rear guiding surface.
 12. The electricalconnector according to claim 9, wherein the first direction and thethird direction are intersected at an angle of 90°.
 13. The electricalconnector according to claim 8, wherein the first direction and thesecond direction are intersected at an angle of 90°.
 14. The electricalconnector according to claim 8, wherein the front guiding member of eachof the plurality of terminals includes a connecting portion that extendsforward from the elastic arm and a protruding portion that protrudesupwards and is connected to the front guiding portion.